US EPA

1236863 

Journal Article 

Application of Dugesia tigrina Girard in toxicological studies of aquatic environments 

Piontek, M 

1998 

1 

Polskie Archiwum Hydrobiologii
ISSN: 0032-3764 

BIOSIS/99/00749 

45 

4 

565-572 

English 

BIOSIS COPYRIGHT: BIOL ABS. Experiments were done on the planarian Dugesia ligrina Girard. The species remarkable regenerative abilities were used for the working out of techniques of an artificial population increase through transverse fission. Optimal laboratory conditions of D. ligrina culturing. size of flasks, water quality, types of diet and ways of feeding were found. Observations were made on the effect of temperature on reproduction. Regeneration of the body parts lasted 10 days at 20-21?C, regaining of the original size occurred after 18 days. Physiological state of D. tigrina was tested with potassium dichromate. Sensitivity of planarians to the poison depends on age, stabilized condition was observed for individuals 18-42 days old. The effect of D. tigrina starvation on its physiological condition was estimated. The planarian revealed high resistance to the shortage of food. 

Ecology; Physiology; Reproductive System-General; Toxicology-Environmental and Industrial Toxicology; Invertebrata; Turbellaria